Packer



sept. 3o, 1930.

H. R. STANDLEE PACKER Original Filed Jan. 22

\I m" Il.

Vclaims and attached drawings forming .a

' which lOf construction willhereinafter appear by.-

TES PATENT OFFICE .UNITED-.STA

HARVEY R.

s'rANDLEE, or ".rULsA,

RATION, OF DALLAS, TEXAS, A CORPORATION OF DELAWARE v i PAOKER Application filed January 22, 1925, lSerial 1\To.3,96(v).y Renewed April 24, *1929. p

i The present invention is designed as an improvement fover that forni of packer shown in my-prior application, Serial Number 746,486, filed October 29, 1924, in'which the specific cooperation between-the packer and the setting meanseis specically set forth and claimed. v

" The conservation of .gas pressure by thel early application of a packer in a well is recognized by those skilled in the art as `such a step permits a continued natural iiow for an indefinite period thereby-eliminating the ex-C pense and .labor involved in theluseoftub ing'and pumping apparatus.

The present construction is designed to facilitate application within a casing under any condition regardless of gas pressure or nature of the well'asto paraffin percentage, and without injury to the destructible elements involved inthe packer -'asem ly or to the well itself. In addition the same' advantageous jarring effect between thev tubing collar and the dog guide block is present.

The foregoing is accomplished by the novel combination and arrangement herein shown and described which includes the. pro"- vision of the springs on the straps between the dogs and the collar; the inverted U- shaped slot and co-operating pin for controlling setting of the packer and the provision of thebacking collars for the rubber packer element to cause the latter toV normallyv expand outwardly. y

' Numerous other advantages and features illustration a well casing 1 is shown in secindicated by reference character 2. The eX-' -pansible packer element includes the rubber tubing 3 fixed to the upper'and lower collars 4. VThese collars 4 each are formed with annular. projections 5 which extend well packer` is set. This arrangement not onlyl prevents `the collapsing of the packer inin supporting the tubing which otherwisev would rest entirely OIL the rubber. This is quite important and considerably extends the. life of the packer.l wThe necessary ports .6 formed in the inner walls of the collars 4 to permit thel escape of the gas when desired.

fixedwto the tubing 2 and this valve is nor mally unseated!due to the pressure of the 'spring8, between the valve and the 'upper collar, see Figure 1. L'

on dog guide -block 9Of frusto conical forarranged to slide with relation to the tubthe" passage of The external vshape'of the/block is optional and may bey triangular,

lsity may demand and according to the num-v ber and arrangement of the gripping members on dogs 10 desired. The` flattened faces of the block 9 are reference to the followingspecic'atlion and groovesffor the reception and travel of the male dovetail carried by each dog. Cooperative' action by the several dogs 10 is Obtained by the use of the collar 11a which is connected to the dogsfbyfmeans of straps 12 and is adapted for longitudinal movement on .the tubing. These straps 12 are spaced'by means of suitable slots 14 formedin the lower flange 15.` of the block 9. Coil part of" this application and wherein like numeralsof reference designate corresponding parts throughout the several lviews in Fig. 1 is a side elevation, f Fig. 2 is a side vertical sectional view, lig; 8 is a section d'on line 3 3 of' Fig. 2f an A Fig. 4 is a section on line 4-4 of Fig I2.

The main elements of the present arrangement are in general sinilar to the corretween the blOCk and the Hang@ 14 and eXeI? sponding elements of my' prior application a normal pressure upwardly to seat the dogs. heretofore mentioned. Fonthe purpose of To cause the engagement of the dogs- A10 OKLAHOMA; ASSIGNOR TO TI-I GUIBERSON CORPO- v tion and the tubing carrying the packer is within the rubber packer 3 -to'pefrmit the engagement of their adjacent ends when the wardlyfunder gas pressure but also assists are' regulated and controlledbythe valve 7 Immediately below the packer is the slip ing.v This block 9 is linternally grooved for l square or otherwiseA in cross-section, as necesformed with centralflongitudinal dovetail j i springsl are arranged 'on each strap bemation and as in the instance of the packerl with the inner face of the casing 1 there is provided the sleeve 11 adapted as inthe instance. of the' collar 11a for longitudinal movement -on the tubing. This sleeve 11 is provided with a slot of inverted U design which acts as a guide for the pin 17 fixed to and extending from the filler block or tube 18 arranged between the collar and the tub` ing. This filler 18 carrying the pin is fixed in position to the tubing by means ofthe adjacent couplings of the tubing between which it is arranged. The function of the slot and pin will be obvious when considering the movement of the elements in running and seating the packer, as will also the pro- Vision of the elongated portion of the slot. Leaf springs 19 are mounted on lsleeve 11 to act as drags therefor and normally engage the inner face Vof the casing.

In operating this combined packer andtubing catcher it will be seen that while the tubing 2 is being lowered into the well the pine 17, `)fixed on the tubing, will press on the lower end of the short leg of the slot 21, and

pull the sliding sleeve 11 downwardly with.,

the tubing. During this movement, the friction springs 19 will bear against the casing andk cause the sleeve 11 to dragy so that it will not drop down on the tubing. As the tubing descends the collar 11@l will occupy the position shown in Figure 1, it being heavy enough `to compress the springs 16 while vthe lower end of the guide block 9 is resting on the cou-K pling 2*". While the coupling 2a is supporting the guide block, the collar-4 is resting on the upper end of the guide block and the spring 8 is forcing the upper collar 4 Adownwardly as shown in Figure 1.

When the tubing has been lowered to a point where the packing is 4to be anchored, the operator lifts the tubing 2 suiiciently to cause theu pin 17 to rise to the top of the slot 21, and then the tubing is turned to drop the pin 17 in the`lon leg of the slot.v Then as the tubing descen s, the collar 11l1 will be 'prevented from descending by the sleeve 1l and consequently the dogs 10- remain )sta-y tionary while the uide block 9 i's being forced Q downwardly by t e packer under the influence of the valve 7 which is fixed on the tubing. At this time the guide block will be locked to the casing, the packer will be expanded somewhat due to the pressure upon its opposite ends, and the packer will be expanded further owing to the fact that the iuid in the well can enter the packing. Obviously a reversal of this operationl will put thlparts in position to be Withdrawn from the we Particular attention is called to the large amount of clearance which provides for running in oil of heavy gravity from a paraftne base. This clearance permits movement of all parts under these and all other circumstances. i

When the present device isseated .the gas pressure enters the grooves in the block 9 and the grooves in the collar to expand the rubber packer 3 to pack off the well. WVhen itis desired to remove the packer from the longer leg of the slot and during this movement the coupling 2a will lift the block 9 to release the slips 10. As the block 9 rises, the fingers 14 will compress the springs 1G and finally lifttheslips. The slips will then lift the collar 11a out of engagement with the sleeve 11.' Should a binding occur between the dogs 10 and the casing a jarring can be obtained by upward movement of the collar 2a against the block' 9.

It will thus be seen that the 4tubing 2 has `been provided with an element 7 and an element 18 each fixed thereon, between which is arranged a packer and setting means for the packer, said setting means forming the lower stop for the packen-when the packer is not expanded, permitting removal of said packer from the well. A All of the elements set forth obviously cooperate witheach other to the desired result` of accurately setting a packer and preventing wear and tear thereon when in use. What I claim as new and useful and desire to secure by Letters Patent is f l. In a packer for oilwells, acasing therefor, tubing within said casing, an expansible packer Varranged for longitudinal movement l on said tubing and having internal ports therethrough, a valveiixed to said tubing for closing said ports, means for normallyl holding said valve from its seat, a guide block a1- ranged on said tubing immediately below said-packer and formed-with tapering'liat surfaces,'dogs mounted thereon, a collar on said tubing below said guide block, straps connecting said dogs to said collar, a slid- 4ing sleeve, and leaf springs fixed to'said sliding sleeve and in engagement `with said casino'. l

2. n a packer for oil wells; a casing therefor, tubing within said casing, an expansiblel packer arranged. for longitudinal' movement on said tubing'and having internal ports therethrough, a valve fixed to said tubing for closing said ports,` means for normally holding said valve from its seat, a guide block arranged on said tubing immediately below said packer and formed with tapering fiat surfaces, dogs mounted thereon, a collar on said'tubing below said guide block, straps connecting said'l collar to said dogs, anda spring for each dog normally forcing the same into engagement with said casing.

3.v In ay packer for oil wells, a casing therefor, tubing within said casing, an expansible packer arranged for longitudinal movement on said tubing and having internal ports therethrough, a valve fixed to said tubing for sliding sleeve, a lil-ler sleeve between saidcollar andy said tubing formed with a pin for normal engagement in said guideway, said `filler sleeve beingffixed with relation to said tubing, straps connecting.' said dogs to said collar, and springs carried by said sliding sleeve normally engaging said casing.

4. In a device of the class described includinda casing and a tubing arranged therein, a guide block arranged for limited movement `on said tubing and formed with a plurality of spaced fiat tapering faces, grooves of dovetailed cross section extending longitudinally at intermediate points vin each flat surface, blocks formed with. dovetails arranged to travel in said .grooves and having outer gripping surfaces for engagement with said casing, meanscontrolledlby 'the movement of 5 thetubing for moving said blockslongitudinally, and a packer arranged on said tubing having a longitudinal passage and a valvecontrolled by themovement ofthe gripping blocks.

5. In a device of the class described including acasing and a tubingarranged therein, a guide block arranged 'for limited movement on said tubing formed with a plurality of spaced flat taperlng faces,l grooves of dovetailed cross section extending longitudinally at intermediate points in each fiat surface,

blocks formed with dovetails arranged to t 7el in said groves and having outer griping surfaces for engagement with said casing, means controlled by the movement of the tubing for moving said blocks longitudiL nally, an vexpansible packer arranged on said tubing having a longitudinal port and a valve for said port controlled bv the longilf tudinal movement of said tubing.

6. In a device of the class described including in combination, acasing, a tubin a packer arranged on said tubing, a gui e block lslidably arranged on said tubing `ad jacent said packer, dogs adapted to travel on 'said guide block and engage said Casin strapsconnected to said dogs, a sliding co lar on said tubing, said straps being connect- `edto said collar, springs on said straps normally tending to cause the engagement of said dogs with said casing, a sliding sleeve on said tubing below said collar formed with an inverted U-shaped slot one leg of which being substantially' twice the length as thel lother leg, a filler tube between said sliding sleeve and tubing and fixed to the tubing,a pin carried by saidller `tube engaging and being adapted to travel in said slot, and a series ofilat springs fixed to said sliding rsleeve and normally engaging said casing. i

7 In a packer for oil wells, a casing for said oil well, tubing within said casing, an expansible packer arranged for longitudinal movement on said tubing and having internal ports therethrough, a .valve ixedto said tubingvfor closing said ports, means for normally holding said valve from its seat, a guide block arranged on said tubing immediately belowsaidpacker, dogs mounted thereon, a collar on saidv tubing below said guide block, a sliding'sleeve, aguideway .of substantially inverted U design formed in said sliding sleeve, a member fixed to said tubing within said sliding sleeve and formed with a `fixed pin for engagement and travel within said guideway, straps connecting each dog to said collar, and friction means carried by said sliding sleeve for engagement with the inner--wall of said casing to iixythe 'sliding sleeve in position -in the casing.

` l 8.- A packer for oil wells including in combination with casing rand tubing,k a rubber tubular section mounted on said tubing, c ollars for each end 'of saidv rubber tubing formed with annular grooves for the recepgrooves extending inwardly a substantial distance beyond the outer wall to permit their tion of the extremities of the same, each of 'I 4the inner walls of said collars forming said engagement upon 'seating of said packer and to form reinforcement for said rubbersection, said inner walls being grooved' for the passage of fluid, and a valve fixed to the tub-y ing for closing said iuid passages."

9c A packer for oil wells including in combination with casing and tubing, a rubber tubular l section mounted on said tubing,

collars for each end of said rubber tubing yformed with annular grooves for the reception of the yextremities of the same, each ofthe inner wallsof said collars forming said grooves ,extending inwardly a substantial distance beyond the outer wall' to permit their engagement upon seating of said packer and to form reinforcement for said rub- ,ber section, said inner walls being grooved for the passa-ge of fluid, ya guide block immediatel,y below said packer element arranged or movement on said tubingand formed with guide surfaces,:dogs yengaging tubular section mounted on Said tubing, collars for eachl en'd vof said rubber tubing formed with annular grooves for the reception of the extremities of the same, each of the inner walls of said collars forming said grooves extending inwardly a substantial distance beyond the outer wall to permit their engagement upon seating of said packer and to form reinforcement for said rubber section, y

said inner walls being grooved for the passage of Huid, a guide block immediately below said packer element arranged for movement on said tubing and formed with guiding surfaces, dogs engaging said guiding Surfaces and adapted for engagement with said casing, means for moving said dogs upwardly 4 into engagement with said casing, comprising a sleeve section formed with a guideway, a member between said sleeve section and said tubing having a pin for travel within said guideway, and means for frictionally engaging said sleeve section with said casing.

11. In a device of the class described, in combination with casingand tubing for an oil well, an expansible packer arranged on said tubing for longitudinal movement and formed with internal longitudinal ports, a valve for said ports iixed to said tubing, a

spring for normally' spacing said valve and'V valve seat, a guide block arranged on said tubing immediately below said packer and being adapted for lon itudinal movement, said guide block being ormed with inclined faces havingr guiding surfaces, a plurality of dogs slidably engaging said guide surfaces, and means for moving said dogs as a unit including a plurality of straps connected to said dogs, guide slots at the lower/ end of said block for preventing lateral movement of said straps, springs arranged on said straps between said dogs and said guide slots, a collar tol which the lower extremities of said straps areconnected, and a sliding sleeve engaging said collar.

12.- In a device of the class described, in combination with casing and tubing for oil wells, an expansible packer arranged on said tubing for longitudinal movement and formed with internal longitudinal ports, a

valve for said ports fixed to said tubing, a

spring for normally spacing said valve and valve seat, a guide block arranged on said tubing immediately below said packer and being adapted for longitudinal movement, said guide block being formed with a plurality of flat inclined faces each having intermediate grooves, a plurality of dogs formed collar, means for limiting the vertical movebelow said packer and being adapted for longitudinal movement, a plurality of dogs t movably mounted on said guide block, dog actuating means for moving said dogs as a unit lto cause them to grip the casing, a sliding sleeve engageable with the dog actuating means to prevent said dog actuatingl means from descendingv with the tubing at a certain time soas to cause the dogs to grip the casing, said. sliding sleeve having a guide- Way including substantially vertical legs connected by a cross-head, one leg being longer than the other, and a pin fixed to the tubing and slidably engaging said guideway.

14. In a device ofthe class described, a casing, an inextensible tubing arranged therein and adapted to extend to the top of the well for conveying fluid to the top of the latter, an expansible packing structure on the tubing consisting of upper and lower metal rings and an intermediate resilient sleeve, means on the tubing for pressing the packing structure downwardly, a guide block arranged for limited movement on the tubing below the packing structure, the packing structure resting` on said` guide block, arlng 'arranged on the tubing and adapted to move axially of the latter, links connected to said ring, dogsconnected to said links and'movt able bythe guide block for gripping the casing, and means controlled by the movement of thetubing independently of said ring for mov/ing thev dogs into engagement with the casing. l

15. In a device of the class described including a well casing and a tubing'arranged therein, a stop fixed to the tubing, a member mounted -on the tubing, and having a guideway slidably engaging said stop, said guideway being of substantially inverted U- shape with one leg of the U longer than the other, said tubing being movable lengthwise and turnable relatively to said member andvthis relative movement being limited byy the stop and guideway, friction means on said member engaging the casing and adapted to cause said member to drag during the lowering of the tubing and to iix said imember in position temporarily while -the tubing is being raised slightly, turned and then lowered to move the stop from the lower end of the -short leg to the lower end of the long leg of the guideway, a collar slidably mounted on the tubing and adapted ed on the guide block, straps connecting the dogs and collar for causingthe dogs to grip to`be engaged by said member to be prevented from lowering with the tubing while the stop is traveling down the lower portion ofthe long leg of the guide, a guide block slidable on the tubing, dogs movably mountthe casing while the stop is traveling down the lower portion of the long leg lof the guideway, and the' block` is lowering with the tubing, a tubular expansible packing co`- operating with the block and having a pas- ,andl ormed with wedgingsurfaces, dogs' movably mounted upon said surfaces, an operating device `surrounding said tubing below said guiding aneans. 'and connected to said.dogs, a sliding member upon the tubing, and, friction devices acting'upon said sliding member andengagng the casing.

17. In a packer for Wells,`a casing ytherefor, a tubing within said casing, an eXpansible packer arranged for longitudinal movement upon said-tubing and having an internal port therethrough, a valve fixed to the tubing for closing saidport, guiding means arranged upon the tubing below said packer'movably independently thereof and formed with wedging surfaces, dogs movably mountedmpon said surfaces, a sliding member upon thejtubing arranged to support saiddogs, tension members disposed between the dogs and guiding means, and friction 1.'. /devices acting`upon said sliding member and engaging -the casing.

18. In a packer for wells, a casing therei for, a tubing within said casing, anexpan-4 sible packer arranged for longitudinal movement upon said tubingand having an internal port therethrough,`a valve fixed upon. the tubing for closing said port, a guideblock mounted to slide upon the tubing `independent of the packer and formed with .Wedging' surfaces, dogs movably mounted upon said surfaces, a sliding memberjupon the tubing arranged to support said dogs,

- and friction devices movable upon'the tube independently ofsaid sliding member and engaging the casing. Y l v 19. In a device of the' class described, in combination with a casing and tubing for wells, anexpansible packer arranged on said tubing for longitudinal movement and formed with a longitudinal port, a valve forl Said para 'fixed to said tubing, a' ingitudiy nallymovable guide block arranged upon the tubing below and independently of said packer,`movable gripping `means upon said guide block, yielding supporting .means between the block and gripping means, a slidi ing sleevel upon the tubing having connections engageable with the gripping means, said sleeve having a guideway includin sub- "stantially parallel'vertic'allegs of di erent lengths connected by a cross head, and a pin fixed to the tubing and slidably engaging f said guide Way.

20. A packer for wells comprising anexpansibletubular section of yielding material, and collars having annular seats embracing the opposite ends of said section and .formed with free extensions disposed within the section and spaced to permit their axial travel into engagement upon the seating of the packer.' Y Y 21. A packer for wells, a tubing,'a friction member movably Iconnected to the tubing to engage a casing, casing gripping members adapted to be supported by the friction member, aA guide block movable upon the tubing to engage the gripping members with i `the casing,av yielding support interposed between said members and guide block, a packer movable upon the tubing independently of said guide block, andmeans fixed upon the the packerl and guide block. 22. In a device of the class described, a tubing, an 'expansible packer mounted on tubing to impart longitudinal movement to` the tubing, a guide block. slidablepupon the tubing independently of the-packer and having inclined faces, dogs slidably mounted on the block faces for Kengaging. a casing, springs interposed between said dogs Iand block, -a yi'eldable support for said dogs free to slide `on said tubing, and anchoring means for 4engaging a casing and also fory engaging said support for setting said dogs to expand. said packer when the tubing is lowered.

23. In a device of the character described, a `tubing, an expansible packer mounted thereon, a guide block axially movable upon the tubing and having inclined faces, means upon the tubing for moving said block in one direction, dogs disposed to engagel a casing by a sliding movement on said faces in said, movement of the block, supporting springs disposed between the dogs and block, and` anchoring means disposed to engage said casing and supportthe dogs. A In testimony whereof I faflix my signature.

. HARVEY R. STANDLEE.

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